Automated g4 rollback of changelist 187563544

PiperOrigin-RevId: 187582263

1 files changed, 9 insertions, 7 deletions

diff --git a/tensorflow/core/protobuf/rewriter_config.proto b/tensorflow/core/protobuf/rewriter_config.proto
index 63303fa968..9ebf217811 100644
--- a/tensorflow/core/protobuf/rewriter_config.proto
+++ b/tensorflow/core/protobuf/rewriter_config.proto
@@ -78,14 +78,16 @@ message RewriterConfig {
   // effect on manually requested memory optimization passes in the optimizers
   // field.
   MemOptType memory_optimization = 4;
-  // A regexp for node names which are valid outputs of recomputations. Inputs
-  // to nodes that match this regexp may be recomputed (subject either to manual
+  // The prefix for nodes which are valid outputs of recomputations. Inputs to
+  // nodes with this name prefix may be recomputed (subject either to manual
   // annotation of those input nodes or to manual annotation and heuristics
-  // depending on memory_optimization), but the nodes themselves will not be
-  // recomputed. This is a prefix match, meaning it matches any node name that
-  // contains a prefix that matches this regexp. Defaults to "gradients/" if
-  // not provided, but can be changed if used within scopes.
-  string memory_optimizer_target_node_name_regexp = 6;
+  // depending on memory_optimization), but the prefixed nodes themselves will
+  // not be recomputed. Typically this will be "gradients/", indicating that
+  // activations from the forward pass of a graph may be recomputed as inputs to
+  // gradients, but may be adjusted if gradients are inside a name scope or if
+  // inputs to non-gradients should be recomputed. Defaults to "gradients/" if
+  // empty or not set.
+  string memory_optimizer_target_node_name_prefix = 6;
 
   // Configures AutoParallel optimization passes either through the
   // meta-optimizer or when manually specified through the optimizers field.